As far as I know, Ginsberg has (or had) colon cancer. I don't know what her current status is. It is (appropriately) confidential personal information.
But she does NOT have pancreatic cancer, to the best of our knowledge.
According to her Wiki bio, Ginsburg has had both colon and pancreatic cancer.
http://en.wikipedia.org/wiki/Ruth_Bader_Ginsburg#Health